Ventilator.



A PATBNTEDMAR. 22515-904'. -F. G. YA'WMAN.

Y VENTILATOR. APPLIUATIQN FILED SEPT. 18, 1902.

y UNITED STATES Patented March 22, 1904.

PATENT OFFICE.

FREDERICK Cr. YAWMAN, OF ROCHESTER, NEW YORK, ASSIGNOR OF ONE- HALF TOCHARLES ENGLERT, JR., OF ROCHESTER, NEW YORK.

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 755,095, dated March22, 1904. `Application iiled September v18,v 1902. Serial No. 123,861.(No model.)

To all Vwhom t may concern,.-

Beit known that I, FREDERICK G. YAWMAN,

of Rochester, in the county of Monroe and' l lift whereby thewindow-sash may be raised.

To these and other ends the invention consists in certain improvementsand combinations of parts, all as will be more fully de-.

scribed, the novel features being pointed out in-the claims at the endof the specification.

VIn the drawings, Figure l is a perspective View showing a portion of aWindow-sash with a ventilator constructed in accordance 'with myinvention applied thereto. Fig. 2 is a cross-sectional view of thesash-rail and the ventilator thereon, taken on the line 2X 2X of Fig. 1.Fig. 3 is a perspective view of a base-plate, showing its application tothe sash-rail; and Fig. 4 is a similar detail view of the closure.

Similar reference-numerals in the several figures indicate similarparts.

A ventilator constructed in accordance with my invention is adapted tobe applied to the lower rail l of a window-sash, and in the latter isprovided a suitable aperture 2, over the outer end of which ispreferaply arranged a perforated plate or wire-netting or the like, asindicated by 3. The ventilatoris arranged upon the inner side of thesash-rail 1 and over the end of the aperture 2 and embodies a baseplate4, which is secured to the rail 1 by means of screws 5 or other suitablefastening devices. This plate is provided with an aperture, as

shown, which registers 4with the aperture in the sash-rail, and in orderto close the latter, as well as to regulate the amount of air ad- 4tionof the parts.

mitted therethrough, I provide a suitable door or closure 6, which ishinged at the lower side to the plate 4, and at its upper edge is anoutwardly-extending curved portion or han- \dle 7, which may be engagedwhen it is desired to elevate the sash to open the Window. I/Vhile anysuitableliinge connection maybe provided between the door landbase-plate, the one which I have shown consists of inwardlyextendingmembers or projections in the form of ears 8, arranged at the bottom ofthe door or closure and adapted to engage the lower edge of the apertureyin said plate; but as the ears are more easily formed at the edge ofthe door Iprovide small notches or depressions 9, in which they engage,so that the lower edge of the plate is permitted to extend below thelower edge of the aperture. These ears are held in operative position.by means of inwardly-extending members engaging the opposite edge ofthe aperture, and in the present instance these members are the wings orplates 10, extending inwardly at the ends of the door and`projectingthrough the aperture at opposite ends thereof, thereby preventing anylateral movement of the door or closure. The upper ends of the wings arecurved, as shown, and at their inner edges are provided with small lugsor projections 11, which are adapted to engage the rear side of theplate 4 to limit the outward movement of the door upon its pivotalconnection with said plate. This arrangement permits the parts to beformed of light sheet metal, and the door or closure being of a singlepiece may be easily secured in position by inserting the wings 10thereon through the aperture in the baseplate and then engaging the earsor members 8 with the lower edge of said aperture or recess 9, when theymay be bent downward slightly, so as to give them a permanent curve orhook, which extending over the inner face of the plate 4 prevents asubsequent separa- The ears 8, while they simply curve over the loweredge of the aperture, are held constantly in engagement therewith by thecurved edges of the wings 10, which engage the upper edge of theaperture, so

that any upward strain exerted upon the handle 7 is received and borneby the wings, and the latter frictionally engaging the plate I serve tosupport the door or'closure in any desired position of adjustment.

The ventilator I have shown and described is simple and consists ofparts that are easily formed and attached together and when united arenot liable to become broken or disarranged.

I claim as my invention# l. In a ventilator, the combination with theapertured base-plate, of a second plate or closure pivoted to thebase-plate by an open or separable hinge connection at one edge of theaperture having the inwardly-projecting segmental wings at the endsextending through the aperture in the base-plate and bearing upon theupper edge of the opening and having the projections at the ends of saidwings 4 adapted to engage the rear side of the baseplate-to limit theopening movement of the closure.

2. In a ventilator, the combination with the apertured base-plate, of aclosure therefor embodying a plate having an open-hinge connection atits lower edge with the lower edge of the aperture in the base-plate andhaving the segmental wings at the sides extending through the aperturein the base-plate with their edges engaging one edge of said aperture,and an outwardly-projecting Bange at the upper edge of the closureforming a lifting-handle therefor.

3. In a ventilator, the combination with an apertured base-plate, of aclosure therefor embodying a plate having segmental wings at the sides,the upper ends of which are adapted to engage the upper edge of theaperture in the base-plate and provided with an outwardlyextendingcurved lip at the top forming a lifting-handle and having inwardly anddownwardl y extending lugs at the bottom engaging the lower side of theaperture in the plate to form a hinge connection therewith.

4:. In a Ventilator, the combination with a base-plate having anaperture and recesses located at the lower edges thereof, of a closureconsisting of `a plate provided with downwardly-extending projectionslying in the recesses on the base-plate, the segmental wings at the endscooperating with the upper side of the aperture in the base-plate andthe projections at the inner ends of the wings adapted to engage therear side of the base-plate to limit the opening movement of the closureand the outwardly-extending flange at the upper edge of the closureforming a lifting-handle.

FREDERICK G. YAVMAN. Witnesses:

(ir. IVILLARD RICH, ELIZABETH J. PERRY.

